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Message-ID: <20201109160440.3a736ee3@xhacker.debian>
Date: Mon, 9 Nov 2020 16:05:14 +0800
From: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To: Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...com>,
Jose Abreu <joabreu@...opsys.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc: netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next] net: stmmac: dwc-qos: Change the
dwc_eth_dwmac_data's .probe prototype
The return pointer of dwc_eth_dwmac_data's .probe isn't used, and
"probe" usually return int, so change the prototype to follow standard
way. Secondly, it can simplify the tegra_eqos_probe() code.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
.../stmicro/stmmac/dwmac-dwc-qos-eth.c | 46 ++++++++-----------
1 file changed, 19 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
index 2342d497348e..27254b27d7ed 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
@@ -119,23 +119,23 @@ static int dwc_eth_dwmac_config_dt(struct platform_device *pdev,
return 0;
}
-static void *dwc_qos_probe(struct platform_device *pdev,
- struct plat_stmmacenet_data *plat_dat,
- struct stmmac_resources *stmmac_res)
+static int dwc_qos_probe(struct platform_device *pdev,
+ struct plat_stmmacenet_data *plat_dat,
+ struct stmmac_resources *stmmac_res)
{
int err;
plat_dat->stmmac_clk = devm_clk_get(&pdev->dev, "apb_pclk");
if (IS_ERR(plat_dat->stmmac_clk)) {
dev_err(&pdev->dev, "apb_pclk clock not found.\n");
- return ERR_CAST(plat_dat->stmmac_clk);
+ return PTR_ERR(plat_dat->stmmac_clk);
}
err = clk_prepare_enable(plat_dat->stmmac_clk);
if (err < 0) {
dev_err(&pdev->dev, "failed to enable apb_pclk clock: %d\n",
err);
- return ERR_PTR(err);
+ return err;
}
plat_dat->pclk = devm_clk_get(&pdev->dev, "phy_ref_clk");
@@ -152,11 +152,11 @@ static void *dwc_qos_probe(struct platform_device *pdev,
goto disable;
}
- return NULL;
+ return 0;
disable:
clk_disable_unprepare(plat_dat->stmmac_clk);
- return ERR_PTR(err);
+ return err;
}
static int dwc_qos_remove(struct platform_device *pdev)
@@ -267,19 +267,17 @@ static int tegra_eqos_init(struct platform_device *pdev, void *priv)
return 0;
}
-static void *tegra_eqos_probe(struct platform_device *pdev,
- struct plat_stmmacenet_data *data,
- struct stmmac_resources *res)
+static int tegra_eqos_probe(struct platform_device *pdev,
+ struct plat_stmmacenet_data *data,
+ struct stmmac_resources *res)
{
struct device *dev = &pdev->dev;
struct tegra_eqos *eqos;
int err;
eqos = devm_kzalloc(&pdev->dev, sizeof(*eqos), GFP_KERNEL);
- if (!eqos) {
- err = -ENOMEM;
- goto error;
- }
+ if (!eqos)
+ return -ENOMEM;
eqos->dev = &pdev->dev;
eqos->regs = res->addr;
@@ -368,9 +366,7 @@ static void *tegra_eqos_probe(struct platform_device *pdev,
if (err < 0)
goto reset;
-out:
- return eqos;
-
+ return 0;
reset:
reset_control_assert(eqos->rst);
reset_phy:
@@ -384,8 +380,7 @@ static void *tegra_eqos_probe(struct platform_device *pdev,
disable_master:
clk_disable_unprepare(eqos->clk_master);
error:
- eqos = ERR_PTR(err);
- goto out;
+ return err;
}
static int tegra_eqos_remove(struct platform_device *pdev)
@@ -403,9 +398,9 @@ static int tegra_eqos_remove(struct platform_device *pdev)
}
struct dwc_eth_dwmac_data {
- void *(*probe)(struct platform_device *pdev,
- struct plat_stmmacenet_data *data,
- struct stmmac_resources *res);
+ int (*probe)(struct platform_device *pdev,
+ struct plat_stmmacenet_data *data,
+ struct stmmac_resources *res);
int (*remove)(struct platform_device *pdev);
};
@@ -424,7 +419,6 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
const struct dwc_eth_dwmac_data *data;
struct plat_stmmacenet_data *plat_dat;
struct stmmac_resources stmmac_res;
- void *priv;
int ret;
data = device_get_match_data(&pdev->dev);
@@ -448,10 +442,8 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
if (IS_ERR(plat_dat))
return PTR_ERR(plat_dat);
- priv = data->probe(pdev, plat_dat, &stmmac_res);
- if (IS_ERR(priv)) {
- ret = PTR_ERR(priv);
-
+ ret = data->probe(pdev, plat_dat, &stmmac_res);
+ if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "failed to probe subdriver: %d\n",
ret);
--
2.29.2
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